from django.shortcuts import get_object_or_404,render
from django.http import HttpResponse,HttpResponseRedirect
from django.urls import reverse
from django.utils import timezone
#from django.template import loader
from django.views import generic

from .models import Choice,Question

# Create your views here.

class IndexView(generic.ListView):
    template_name = 'polls/index.html'
    context_object_name = 'latest_question_list'

    def get_queryset(self):
        return Question.objects.filter(
            pud_date__lte=timezone.now()
        ).order_by('-pud_date')[:5]
    #    return Question.objects.order_by('-pud_date')[:5]

class DetailView(generic.DetailView):
    model = Question
    template_name = 'polls/detail.html'

    def get_queryset(self):
        return Question.objects.filter(pud_date__lte=timezone.now())

class ResultsView(generic.DetailView):
    model = Question
    template_name = 'polls/results.html'


#def index(request):
 #   latest_question_list = Question.objects.order_by('-pud_date')[:5]
 #   template = loader.get_template('polls/index.html')
 #   context = {
 #       'latest_question_list': latest_question_list,
 #   }
#    output = ', '.join([q.question_text for q in latest_question_list])
 #   return HttpResponse(template.render(context,request))
 #   return render(request,'polls/index.html',context)

#def detail(request,question_id):
   # try:
    #    question = Question.objects.get(pk=question_id)
    #except Question.DoesNotExist:
     #   raise Http404("Quesrtion does not exist")
    #return HttpResponse("You're looking at question %s.",% question_id)
 #   question = get_object_or_404(Question,pk=question_id)
 #   return render(request,'polls/detail.html',{'question':question})
#def results(request,question_id):
    #response = "You're looking at the results of question %s."
#    question = get_object_or_404(Question,pk=question_id)
    #return HttpResponse(response % question_id)
 #   return render(request,'polls/results.html',{'question':question})

def vote(request,question_id):
    question = get_object_or_404(Question,pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except(KeyError,Choice.DoesNotExist):
        return render(request,'polls/detail.html',{
            'question': question,
            'error_message': "You didn't select a choice.",
        })
    else:
        selected_choice.votes +=1
        selected_choice.save()
    return HttpResponseRedirect(reverse('polls:results',args=(question.id,)))
    return HttpResponse("You're voting on question %s." % question_id)

